is that a real 302 Z28 engine?

grumpyvette

Administrator
Staff member
heres some links to casting numbers

viewtopic.php?f=51&t=93&p=2481&hilit=+casting#p2481

http://enthusiast.yearone.com/vehicle-i ... -decoding/

viewtopic.php?f=44&t=623&p=834&hilit=+crossram+cross+ram#p834

you need to give me more info, but if you run into one for sale chances are excellent is a KNOCK-OFF or a parts assembly, not a fantastic deal from some guys garage, simply because of the limited numbers produced, the short production run, and a high mortality rate plus they are 40 year old engines.
BTW if you do decide to build a 302 displacement engine, getting the engine compression up in the 11.5:1 range and using some mildly ported vortec heads, with bigger valve springs, better clearance, and 1.6:1 roller rockers, with a matching vortec single plane intake and a crane 110921 flat tappet solid lifter cam,and a manual transmission, with a 3.9:1-4.56:1 rear gear ratio, and a good 7-8 quart baffled oil pan has repeatedly proven to make a decent combo in a fairly light car

if the original intakes on the engine

1967-68 3917610 302
1969 3932472 302

heads
1967.. 3890462 302,327 2.02 1.6
1967.. 3917264 302 .........2.02 1.6
1967-69 3917291 302,327 2.02 1.6
1968 .. 3928455 302 .......2.02 1.6
1968 ........3931639 302 ......2.02 1.6

block
1969 ......3956618 302
1967-68 389257 302
1968-69 3814660 302
1967.. 3892657 302
1968 .......3914678 302
1969 ......3932386 302
1969 ......3932388 302



3956618....302.....69....4...Z-28 Camaro
3956618....327...68-69...2
3956618....350.....69....2 or 4

or if the heads are off push the piston down to BDC and measure the bore depth
3.00"=302
3.25"=327
3.48"=350
 
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